<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
	</body>
	<script type="text/javascript">
		
		function fn(a,b,c,d){
			console.log(a,b,c)
		}
		
		fn(1,2)
		
	</script>
</html>
